Issue 1, 2022

A tri-component semiconducting polymer with ultrahigh photothermal conversion efficiency as a biodegradable photosensitizer for phototheranostics

Abstract

Semiconducting polymers usually with high photostability, reactive oxygen species (ROS) generation ability and photothermal conversion efficiency hold tremendous promise for phototherapy. In this study, a biodegradable tri-component semiconducting polymer (NDT) has been designed and synthesized for phototheranostics. NDT nanoparticles (NPs) obtained by nano-precipitation with an ultrahigh photothermal conversion efficiency (65.6%) could be degraded in the presence of hydrogen peroxide in the tumor microenvironment (TME). Such NPs show high phototoxicity towards human cervical cancer cells (HeLa) with laser irradiation as well as negligible dark toxicity. Furthermore, the in vivo study demonstrates that tumor growth was inhibited efficiently when mice were injected with NDT NPs, even with low power laser irradiation (0.2 W cm−2). In contrast, higher power density (0.5 W cm−2) led to complete tumor suppression. No side effects were observed towards normal tissues, which was confirmed by the H&E stained pictures of the normal tissues, including heart, liver, spleen, lung and kidney. Further, hematological, liver and renal function parameters indicate the biosafety of NDT NPs.

Graphical abstract: A tri-component semiconducting polymer with ultrahigh photothermal conversion efficiency as a biodegradable photosensitizer for phototheranostics

Supplementary files

Article information

Article type
Research Article
Submitted
04 Sep 2021
Accepted
04 Nov 2021
First published
11 Nov 2021

Mater. Chem. Front., 2022,6, 8-14

A tri-component semiconducting polymer with ultrahigh photothermal conversion efficiency as a biodegradable photosensitizer for phototheranostics

Y. Gu, G. Zhou, Y. Zhong, L. Tan, Z. Zheng, Z. Qiu, B. Wei, L. Shen, J. Yang and D. Zou, Mater. Chem. Front., 2022, 6, 8 DOI: 10.1039/D1QM01236C

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